// jQuery Context Menu Plugin
//
// Version 1.01 customized version (see comment below)
//
// Cory S.N. LaViska
// A Beautiful Site (http://abeautifulsite.net/)
//
// More info: http://abeautifulsite.net/2008/09/jquery-context-menu-plugin/
//
// Terms of Use
//
// This plugin is dual-licensed under the GNU General Public License
//   and the MIT License and is copyright A Beautiful Site, LLC.
//
// 2011-02-17 Martin Wendt: 
//            Changed stopPropagation() to preventDefault() in order to make it
//            work with Dynatree drag'n'drop.  
//            See http://code.google.com/p/dynatree/issues/detail?id=174
//
if(jQuery)( function() {
	$.extend($.fn, {
		
		contextMenu: function(o, callback) {
			// Defaults
			if( o.menu == undefined ) return false;
			if( o.inSpeed == undefined ) o.inSpeed = 150;
			if( o.outSpeed == undefined ) o.outSpeed = 75;
			// 0 needs to be -1 for expected results (no fade)
			if( o.inSpeed == 0 ) o.inSpeed = -1;
			if( o.outSpeed == 0 ) o.outSpeed = -1;
			// Loop each context menu
			$(this).each( function() {
			  var el = $(this);
        var offset = $(el).offset();
        // Add contextMenu class
        $('#' + o.menu).addClass('contextMenu');

        // Simulate a true right click
        $(this).mousedown( function(e) {
          var evt = e;
          //evt.stopPropagation();
          evt.preventDefault();
          $(this).mouseup( function(e) {
            //e.stopPropagation();
            e.preventDefault();
            var srcElement = $(this);
            $(this).unbind('mouseup');

            if( evt.button == 2 ) {
              // Hide context menus that may be showing
              $(".contextMenu").hide();
              // Get this context menu
              var menu = $('#' + o.menu);
              if( $(el).hasClass('disabled') ) return false;
              
              // Detect mouse position
              var d = {}, x, y;            
              if( self.innerHeight ) {
                d.pageYOffset = self.pageYOffset;
                d.pageXOffset = self.pageXOffset;
                d.innerHeight = self.innerHeight;
                d.innerWidth = self.innerWidth;
              } else if( document.documentElement &&
                document.documentElement.clientHeight ) {
                d.pageYOffset = document.documentElement.scrollTop;
                d.pageXOffset = document.documentElement.scrollLeft;
                d.innerHeight = document.documentElement.clientHeight;
                d.innerWidth = document.documentElement.clientWidth;
              } else if( document.body ) {
                d.pageYOffset = document.body.scrollTop;
                d.pageXOffset = document.body.scrollLeft;
                d.innerHeight = document.body.clientHeight;
                d.innerWidth = document.body.clientWidth;
              }
              (e.pageX) ? x = e.pageX : x = e.clientX + d.scrollLeft;
              (e.pageY) ? y = e.pageY : y = e.clientY + d.scrollTop;
              
              // Show the menu
              $(document).unbind('click');
              $(menu).css({ top: y, left: x }).fadeIn(o.inSpeed);
              // Hover events
              $(menu).find('A').mouseover( function() {
                $(menu).find('LI.hover').removeClass('hover');
                $(this).parent().addClass('hover');
              }).mouseout( function() {
                $(menu).find('LI.hover').removeClass('hover');
              });
              
              
              // Keyboard
              $(document).keypress( function(e) {
                switch( e.keyCode ) {
                  case 38: // up
                    if( $(menu).find('LI.hover').size() == 0 ) {
                      $(menu).find('LI:last').addClass('hover');
                    } else {
                      $(menu).find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
                      if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:last').addClass('hover');
                    }
                  break;
                  case 40: // down
                    if( $(menu).find('LI.hover').size() == 0 ) {
                      $(menu).find('LI:first').addClass('hover');
                    } else {
                      $(menu).find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
                      if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:first').addClass('hover');
                    }
                  break;
                  case 13: // enter
                    $(menu).find('LI.hover A').trigger('click');
                  break;
                  case 27: // esc
                    $(document).trigger('click');
                  break
                }
              });
              
              // When items are selected
              $('#' + o.menu).find('A').unbind('click');
              $('#' + o.menu).find('LI:not(.disabled) A').click( function() {
                $(document).unbind('click').unbind('keypress');
                $(".contextMenu").hide();
                // Callback
                if( callback ) callback( $(this).attr('href').substr(1), $(srcElement), {x: x - offset.left, y: y - offset.top, docX: x, docY: y} );
                return false;
              });
              
              // Hide bindings
              setTimeout( function() { // Delay for Mozilla
                $(document).click( function() {
                  $(document).unbind('click').unbind('keypress');
                  $(menu).fadeOut(o.outSpeed);
                  return false;
                });
              }, 0);

            } 
          
          });
        });
        
        // Disable text selection
        if( $.browser.mozilla ) {
          $('#' + o.menu).each( function() { $(this).css({ 'MozUserSelect' : 'none' }); });
        } else if( $.browser.msie ) {
          $('#' + o.menu).each( function() { $(this).bind('selectstart.disableTextSelect', function() { return false; }); });
        } else {
          $('#' + o.menu).each(function() { $(this).bind('mousedown.disableTextSelect', function() { return false; }); });
        }
        // Disable browser context menu (requires both selectors to work in IE/Safari + FF/Chrome)
        $(el).add($('UL.contextMenu')).bind('contextmenu', function() { return false; });
      });
			return $(this);
		},
		
		// Disable context menu items on the fly
		disableContextMenuItems: function(o) {
			if( o == undefined ) {
				// Disable all
				$(this).find('LI').addClass('disabled');
				return( $(this) );
			}
			$(this).each( function() {
				if( o != undefined ) {
					var d = o.split(',');
					for( var i = 0; i < d.length; i++ ) {
						$(this).find('A[href="' + d[i] + '"]').parent().addClass('disabled');
						
					}
				}
			});
			return( $(this) );
		},
		
		// Enable context menu items on the fly
		enableContextMenuItems: function(o) {
			if( o == undefined ) {
				// Enable all
				$(this).find('LI.disabled').removeClass('disabled');
				return( $(this) );
			}
			$(this).each( function() {
				if( o != undefined ) {
					var d = o.split(',');
					for( var i = 0; i < d.length; i++ ) {
						$(this).find('A[href="' + d[i] + '"]').parent().removeClass('disabled');
						
					}
				}
			});
			return( $(this) );
		},
		
		// Disable context menu(s)
		disableContextMenu: function() {
			$(this).each( function() {
				$(this).addClass('disabled');
			});
			return( $(this) );
		},
		
		// Enable context menu(s)
		enableContextMenu: function() {
			$(this).each( function() {
				$(this).removeClass('disabled');
			});
			return( $(this) );
		},
		
		// Destroy context menu(s)
		destroyContextMenu: function() {
			// Destroy specified context menus
			$(this).each( function() {
				// Disable action
				$(this).unbind('mousedown').unbind('mouseup');
			});
			return( $(this) );
		}
		
	});
})(jQuery);